✦ LIBER ✦

Intensity and Bandshapes of Collision-Induced Absorption by CO2 in the Region of the Fermi Doublet

✍ Scribed by A.A. Vigasin

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 146 KB
Volume: 200
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.1999.8022

No coin nor oath required. For personal study only.

✦ Synopsis

The carbon dioxide dimer spectroscopic patterns are retrieved from the analysis of collision-induced absorption (CIA) spectral bandshape at room temperature. It is shown that the use of the simplified model based on the symmetric-top approximation allows roughly consistent simulation of the observed (CO 2 ) 2 dimer spectrum. The rotational constants obtained can be considered as effective thermally averaged constants which characterize dimeric structure, strongly distorted from the ground state. The overall CIA bandshape and the integrated intensity of absorption are broken down into partial contributions from tightly bound and metastable dimers and free-pair states. This approach is shown to be in agreement with a wide range of independent spectroscopic and thermodynamic data.

📜 SIMILAR VOLUMES

Collision-Induced Absorption in the Regi

Collision-Induced Absorption in the Region of the O2 Fundamental: Bandshapes and Dimeric Features

✍ A.A. Vigasin 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 118 KB

Collision-Induced Absorption by CO2in th

Collision-Induced Absorption by CO2in the Region of ν1, 2ν2

✍ Y.I. Baranov; A.A. Vigasin 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 94 KB

Collision-induced absorption (CIA) by CO2 is measured in the 1100-1600 cm-1 range using a Fourier-transform spectrometer with a resolution of 0.5 cm-1. The current measurements, which agree well with previous ones but are more precise, reveal pronounced structures on top of both unresolved Fermi dou

Temperature Variations of the Interactio

Temperature Variations of the Interaction Induced Absorption of CO2 in the ν1, 2ν2 Region: FTIR Measurements and Dimer Contribution

✍ A.A. Vigasin; Y.I. Baranov; G.V. Chlenova 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 142 KB

The temperature variations in collision-induced absorption (CIA) spectra of carbon dioxide in the region of the Fermi doublet are examined. New FTIR CIA spectra are recorded in the temperature range T = 206-296 K. The spectra were subject to decomposition in order to separate true dimer contribution

Study of the fermi doublet ν1-2ν2 in the

Study of the fermi doublet ν1-2ν2 in the Raman spectrum of liquid carbon disulphide by the solvent variation method and the modified winther method

✍ José Fernández Bertran; Boris La Serna 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 230 KB

Intensities and Self-Broadening Coeffici

Intensities and Self-Broadening Coefficients of Weak Water Vapor Lines in the 720-nm Region Determined by Intracavity Laser Absorption Spectroscopy

✍ K. Singh; J.J. Obrien 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 480 KB

The time-resolved quasi-cw form of intracavity laser spectroscopy is used for the quantitative determination of absolute intensities and self-broadening coefficients of weak vibration-rotation lines of water that absorb in the region of the \(720-\mathrm{nm}\) band. The studies have been conducted u

Comparison between collision induced dis

Comparison between collision induced dissociation of electrosprayed protonated peptides in the up-front source region and in a low-energy collision cell

✍ W. D. van Dongen; J. I. T. van Wijk; B. N. Green; W. Heerma; J. Haverkamp 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 66 KB 👁 2 views

A systematic comparison between the up-front Collision induced dissociation (CID) mass spectra and low-energy CID tandem mass spectra from twenty-one singly and/or doubly charged peptides has been made. CID spectra of the peptides were recorded at different electrode voltages in the up-front source